A beverage container holding device includes a first rotating member supported by a holder main body such that the first rotating member can swing horizontally. The first rotating member includes a first shaft member supported by the holder main body and extending in an up-and-down direction, and a first main body supported by the first shaft member such that the first main body can be present in a receiving portion and retract from the receiving portion. The first main body includes a front contact surface portion having a contact portion, which the beverage container received in the receiving portion can contact. The front contact surface portion makes, at least at the contact portion, an obtuse angle with an imaginary line extending from a center of the first shaft member to the contact portion.